﻿$.fn.infiniteCarousel = function () {
    function repeat(str, num) {
        return new Array(num + 1).join(str);
    }
    return this.each(function () {
        var $wrapper = $('> div', this).css('overflow', 'hidden'),
        $slider = $wrapper.find('> ul'),
        $items = $slider.find('> li'),
        $single = $items.filter(':first'),
        singleWidth = $single.outerWidth(),
        visible = Math.ceil($wrapper.innerWidth() / singleWidth), // note: doesn't include padding or border
        currentPage = 1,
        pages = Math.ceil($items.length / visible);
        // 1. Pad so that 'visible' number will always be seen, otherwise create empty items
        if (($items.length % visible) != 0) {
            $slider.append(repeat('<li class="empty" />', visible - ($items.length % visible)));
            $items = $slider.find('> li');
        }
        // 2. Top and tail the list with 'visible' number of items, top has the last section, and tail has the first
        $items.filter(':first').before($items.slice(-visible).clone().addClass('cloned'));
        $items.filter(':last').after($items.slice(0, visible).clone().addClass('cloned'));
        $items = $slider.find('> li'); // reselect
        // 3. Set the left position to the first 'real' item
        $wrapper.scrollLeft(singleWidth * visible);
        // 4. paging function
        function gotoPage(page) {
            var dir = page < currentPage ? -1 : 1, n = Math.abs(currentPage - page), left = singleWidth * dir * visible * n;
            $wrapper.filter(':not(:animated)').animate({
                scrollLeft: '+=' + left
            }, 500, function () {
                if (page == 0) {
                    $wrapper.scrollLeft(singleWidth * visible * pages);
                    page = pages;
                } else if (page > pages) {
                    $wrapper.scrollLeft(singleWidth * visible);
                    // reset back to start position
                    page = 1;
                }
                currentPage = page;
            });
            return false;
        }
//        $wrapper.after('<a class="arrow back">&lt;</a><a class="arrow forward">&gt;</a>');
//        // 5. Bind to the forward and back buttons
//        $('a.back', this).click(function () {
//            return gotoPage(currentPage - 1);
//        });
//        $('a.forward', this).click(function () {
//            return gotoPage(currentPage + 1);
//        });
        // create a public interface to move to a specific page
        $(this).bind('goto', function (event, page) {
            gotoPage(page);
        });
        $(this).bind('next', function () {
            gotoPage(currentPage + 1);
        });
    });
};
$(document).ready(function () {
    var autoscrolling = true;
    $('.infiniteCarousel').infiniteCarousel().mouseover(function () {
        autoscrolling = false;
    }).mouseout(function () {
        autoscrolling = true;
    });
  //  $('.infiniteCarousel').trigger('goto', 2);
    setInterval(function () {
        if (autoscrolling) {
            $('.infiniteCarousel').trigger('next');
        }
    }, 5000 );
}); 
